Valve



(Model.)

M. HAS'I'INGS..

VALVE.

Patented A ug. 23, 1881.

rance.

t MICHAEL HASTINGS, OF BROOKLYN, NEW YORK.

VALVE.

SPECIFICATION forming part of Letters Patent No. 246,132, dated August2.3, 1881,

Application filed June 27, 1881.

To all whom it may concern Be it known that I, MICHAEL HAsrINGs, acitizen of the United States, residing at Brooklyn, in the county ofKings and State ot' New York, have invented new and useful Improvementsin Valves, of which the following is a specification.

rlhis invention relates especially to the formation of the valve-seatandvalve; and it consistsin the combination of the valve-diaphragmconstructed with an annular raised valve-seat surrounding` its port, andwith an upwardlyprojecting guard-flange interior of and higher thanthevalve-scat, and the valve proper having an annular groove adapted tothe valveseat, so that while the valve is enabled to close ti ghtiy onits raised seat the latter is kept free ot grit or other impure matterin the steam or other fluid passing` through the valve. The valve has acentral stud fitting into or within the guard-flange, for centering thevalve, especially in grinding the same to its seat.'

This invention is illustrated in the accompanying drawings, in whichFigurel represents a vertical longitudinal section. Fig. 2 shows thevalve-seat in plan view. Fig. 3 is an inverted plan view of the valve.

Similar letters indicate corresponding parts.

The letter A designates the valve-shell, cast with the usual diaphragm,B, having a central port or aperture, C.

Surrounding the port (J, and at a short distance therefrom, is thevalve-seat D, while on the edge of the port is the guard-flange E, sothat the latter is interior of the valve-seat. The valve-seat D israised above the top suri'ace of the diaphragm B, and is annular in itsshape or outline, corresponding to the port C, the seat having,moreover, in this example an inverted V shape in cross-section. Iheguardflange E is higher than the valve-seat D, and hence, when the valveis opened and steam or other Huid passes up through the port C, the uidis carried or thrown above the valveseat bythe flange, and blows overthe seat, thus leaving it, as well as the space on either' side thereof,free of grit or any other impurities that may be mixed with the luid.

(Model.)

The letter F designates the valve, provided with an annular groove, o,in its lower surface. The circle of this groove is equal in diameter tothat of the valve-seat D, and its opposite walls are substantiallystraight, while its wid th is less than the greatest width of thevalveseat, so that by its means the valve is adapted to wedge downtightly upon the seat.

In a cen tralportion of the valve F, and upon its lower surface, isformed a stud or protuberance, G, the diameter of which is equal to theinner diameter of the guard-flange E, so that it fits into or withinthis flange. As the valve F approaches its seat the stud G takes itsplace within the guard-flange E, thus forininga guide for centering thevalve, and it will be seen that an important advantage is therebygainedmot only in closing the valve, but also and especially in grindingthe saine to the seat.

I am aware that the raised valve-seat and grooved valve, broadly, arenot new, and I do not claim such as my invention.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, substantially as hereinbefore set forth, of thediaphragm constructed with the annular raised valve-seat surrounding itsport and with the upwardly-projecting guard-flange interior of andhigher than the valve-seat, and the valve having an annular grooveadapted to the valve-seat.

2. rllhe combination, substantially as hereinbefore set forth, of thediaphragm constructed with the annular raised valve-seat surrounding itsport, and with the upwardly-projecting guard-ange interior of and higherthan the valve-seat7 and the valve having an annular` groove adapted tothe valve-seat, and having a central stud litting into or within theguard- Hange for centering the valve.

In testimony whereof I have hereunto set my hand and seal in thepresence of two subscribing` witnesses.

MICHAEL HASTINGS.

